Colour

#001C51

#001C51
Blue
Dark
Nearest: Midnight blue

#001C51 is a blue with RGB values 0, 28, 81 and HSL 219°, 100%, 16%. It is a dark colour, so white text on it reaches 16.3:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#001C51#001C51

HEX#001C51

RGBrgb(0, 28, 81)

RGB (0–1)0, 0.1098, 0.3176

RGB percentages0%, 11%, 31.8%

HSLhsl(219.3, 100%, 15.9%)

HSV / HSBhsv(219.3, 100%, 31.8%)

CMYK100%, 65.4%, 0%, 68.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer7,249

CSS custom property--colour: #001C51;

Brightness & contrast

Relative luminance0.01425WCAG 2.x, 0 is black and 1 is white

Perceived brightness34.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 16.34:1

Contrast with white16.34:1WCAG normal text: AAA

Contrast with black1.28:1WCAG normal text: Fail

Greyscale equivalent#1A1A1A

Inverted#FFE3AE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#002453no red cones; affects about 1% of men; ΔE 6.7 from the original

Deuteranopia#001C50no green cones; the most common form, about 1% of men; ΔE 0.7 from the original

Tritanopia#002A33no blue cones; rare, and affects men and women equally; ΔE 35.4 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text16.34:1WCAG large text: AAA

Contrast with black, large text1.28:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 22.8 Dark slateblue · ΔE 23.1 Rebecca purple · ΔE 37.2 Black · ΔE 39.9 Indigo · ΔE 42.2 Navy · ΔE 44.3

Nearest named CSS colourMidnight blue (#191970)ΔE 22.78, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#513500

Analogous#004551, #0C0051

Triadic#51001C, #1C5100

Split complementary#510C00, #455100

Tetradic#510045, #513500, #00510C

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#1E6CFF

Lighter +30%#0051EA

Lighter +20%#003FB7

Lighter +10%#002E84

Darker −10%#000A1E

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#001C51

Less saturated −25%#0A1F47

Channel breakdown

G28

B81

Red0 (0%)

Green28 (11%)

Blue81 (31.8%)

Hue219.26°

Saturation (HSL)100%

Lightness15.88%

Dominant channelBlue

Hex per channelR 00 · G 1C · B 51

Keep nerding

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#001C51

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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